منابع مشابه
Saturation of low - energy antiproton annihilation on nuclei
Recent measurements of very low-energy (p L < 100 MeV/c) ¯ p annihilation on light nuclei reveal apparent suppression of annihilation upon increasing the atomic charge Z and mass number A. Using ¯ p-nucleus optical potentials V opt , fitted to ¯ p-atom energy-shifts and-widths, we resolve this suppression as due to the strong effective repulsion produced by the very absorptive V opt. The low-en...
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In the framework of nonrelativistic QCD, we compute the leading double-logarithmic corrections of order αs ln (1/αs) to the heavy-quark-antiquark bound-state wave function at the origin, which determines the production and annihilation rates of heavy quarkonia. The phenomenological implications for the top-antitop and Υ systems are discussed. PACS numbers: 12.38.Bx, 12.39.Jh, 14.40.Gx ∗Permanen...
متن کاملSymmetry Violation in Heavy Nuclei
For a long time heavy nuclei were considered for the study of symmetry violations mostly due to enhancement factors related to the complex nuclear structure. Classical examples are experiments that measure parity violating correlations in nuclear decays and in nuclear reactions. It is well known that due to nuclear enhancements the parity violating effects in nuclei could be as large as ∼ 10 in...
متن کاملTheoretical developments in heavy nuclei
The present-day nuclear structure theory exhibits a great degree of synergy with respect to methods that are used to describe various phenomena in heavy nuclear systems. From few-body methods, through the shell model to mean-field approaches, the bridges are being built between different ways of describing the stable as well as the most exotic nuclei. In the present talk, I give a review of sev...
متن کاملRadiative Corrections to High Energy Lepton Bremsstrahlung on Heavy Nuclei
One-loop radiative corrections to the leptonic tensor in high energy bremsstrahlung on heavy nuclei are calculated. Virtual and real photon radiation is taken into account. Double bremsstrahlung is simulated by means of Monte Carlo. Numerical results are presented for the case of muon bremsstrahlung in conditions of the COMPASS experiment at CERN.
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1980
ISSN: 0370-2693
DOI: 10.1016/0370-2693(80)90450-5